I actually tried both on both today.
1.8.12.1 (with the fix), I tried with both the center clock and without. Only the center clock shows the carrier, when I drag notification down.
I also updated to 1.8.19, the center clock (and this mod itself) works correctly with the new MIUI update (for anyone that wanted to know), but for me, I still cannot get it to work with the status bar without the center clock when dragging down the notification.
I tried at stock, so there were no notification icons. I thought it was weird. I'm actually going to try to install again and hope there is some miracle. lol

I'm hoping for the best...
Thanks to Andy for great mod too! I actually read through this whole entire thread just before replying! So I'm going to try a few things.
edit:
I just downloaded another file. I forgot was it from xda or this forum, and it worked. Odd...